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2 April, 22:44

A light-year measures the distance a light beam can travel in one year.

One light-year is equal to 9 500 000 000 000 kilometers. Why do scientists

use light-years to measure distances in the universe?

A) Light-years are the only practical unit for measuring the vast distances

of space.

B) Light-years tell us about the temperature, distance, and age of other

celestial bodies

C) Light-years are the most accurate form of measurement for universal

purposes.

D) Light-years measure the age of celestial bodies by determining how

bright the light is.

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Answers (1)
  1. 3 April, 02:05
    0
    Answer:B
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